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unknown as complete specimens have not been found. The leaf tips are hooded in shape and the veins are a sub-parallel showing a very indistinct midrib. The primary veins and major secondary veins start near the leaf base and are connected by a dense tertiary and higher order veins forming a mesh of
460:
are an elongated elliptical shape overall, being between 170 millimetres (6.7 in) and over 450 millimetres (18 in) long. The leaves range from 50–150 millimetres (2.0–5.9 in) in width, with the full length of large leaves and the structure of the leaf
356:
layers of the lower part of the formation. The lakes which produced these fossils are estimated to have been active between 48 and 49 million years ago, with the lava flows in the formation dating between 42 and 50 million years old. Fossils of
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and additional fossils have been recovered from the Lamont Creek site near
Princeton. The Allenby Formation is currently considered to be Early Eocene in age, based on
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crystals. The second group of fossils have been recovered from three outcrops of the early to early Middle Eocene
Klondike Mountain Formation around
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692:
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414:
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662:
657:
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found in the
Klondike Mountain Formation have been noted, prior to the species description, as belonging to the extinct
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318:
697:
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470:. The pattern of the veins is characteristic of the family Araceae and confirms this species' placement in it.
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322:
551:
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is in recognition of paleobotanist Jack Wolfe for his work on the
Western North American Paleogene.
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395:
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121:
520:
506:"New fossil leaves of Araceae from the Late Cretaceous and Paleogene of western North America"
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386:, a plant order which includes modern bananas and gingers. This identification was made by
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418:
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in Canada. It is one of several extinct species placed in the living golden-club genus
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fossil leaves found in
Western North America which are related to the modern
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is at the "One mile Creek" exposure of the
Allenby Formation near
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Bogner, J.; Johnson, K. R.; Kvacek, Z.; Upchurch, G. R. (2007).
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277:
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348:. Fossils in the Klondike Mountain Formation are found in
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led by Josef Bogner, with the team publishing their 2007
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specimen DMNH-26516 which is currently preserved in the
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for specimens in the paleobotanical collection of the
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has been identified from a group of exposures of the
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421:. The specimens were studied by a group of
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317:and a group of exposures of the related
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250:Bogner, Johnson, KvaÄŤek & Upchurch
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273:described from a series of isolated
415:Denver Museum of Nature and Science
370:in collections and publications.
284:sediments exposed in the state of
16:Extinct species of flowering plant
14:
401:The species was described from a
673:Ypresian plants of North America
538:The Angiosperm Phylogeny Website
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688:Extinct flora of North America
1:
668:Fossil taxa described in 2007
280:. The species is known from
693:Klondike Mountain Formation
678:Flora of Washington (state)
327:Princeton, British Columbia
319:Klondike Mountain Formation
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413:collections housed at the
306:History and classification
683:Flora of British Columbia
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122:Scientific classification
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663:Plants described in 2007
290:United States of America
658:Prehistoric angiosperms
33:Early - Middle Eocene
374:is a form taxon for
346:Republic, Washington
292:and the province of
396:Seattle, Washington
334:radiometric dating
698:Allenby Formation
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552:Taxon identifiers
315:Allenby Formation
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427:type description
419:Denver, Colorado
376:Upper Cretaceous
294:British Columbia
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29:Temporal range:
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590:Orontium wolfei
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560:Orontium wolfei
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519:(47): 133–147.
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433:in the Journal
331:Potassium–argon
311:Orontium wolfei
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259:Orontium wolfei
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244:Orontium wolfei
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115:Orontium wolfei
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25:Orontium wolfei
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630:wfo-0001284403
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456:The leaves of
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441:of the chosen
423:paleobotanists
411:paleobotanical
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269:in the family
262:is an extinct
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223:O. wolfei
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443:specific name
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403:type specimen
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388:Jack A. Wolfe
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372:Zingiberopsis
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367:Zingiberopsis
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323:type locality
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232:Binomial name
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152:Tracheophytes
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653:Orontioideae
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392:Burke Museum
384:Zingiberales
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584:Wikispecies
452:Description
363:morphogenus
338:plagioclase
264:golden-club
188:Alismatales
165:Angiosperms
647:Categories
513:Zitteliana
474:References
466:elongated
435:Zitteliana
286:Washington
525:1612-412X
458:O. wolfei
439:etymology
431:O. wolfei
380:Oligocene
359:O. wolfei
216:Species:
135:Kingdom:
617:50323592
612:Tropicos
575:Q7103804
569:Wikidata
407:holotype
350:mudstone
299:Orontium
209:Orontium
194:Family:
178:Monocots
604:8352432
468:aerolae
463:petiole
437:. The
342:biotite
321:. The
288:in the
271:Araceae
267:species
241:†
220:†
204:Genus:
198:Araceae
184:Order:
139:Plantae
113:Fossil
523:
446:wolfei
405:, the
282:Eocene
278:leaves
275:fossil
509:(PDF)
417:, in
354:shale
172:Clade
159:Clade
146:Clade
599:GBIF
521:ISSN
429:for
352:and
340:and
39:Preęž’
625:WFO
378:to
336:of
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511:.
482:^
398:.
394:,
302:.
174::
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89:Pg
527:.
517:A
94:N
84:K
79:J
74:T
69:P
64:C
59:D
54:S
49:O
44:ęž’
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